.gitbook-link {
    display: none !important;
}

.u-btn{
  width: 20%;
  display: inline-block;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  background: #fff;
  border: 1px solid #dcdfe6;
  border-color: #dcdfe6;
  color: #606266;
  -webkit-appearance: none;
  text-align: center;
  box-sizing: border-box;
  outline: none;
  margin: 0;
  transition: .1s;
  font-weight: 500;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  padding: 10px 15px;
  font-size: 14px;
  border-radius: 4px;
  margin-right: 20px;
  margin-top:20px;
}

/* 含标题和Tab的模块头部-默认不定宽 */
.m-hd{height:35px;line-height:35px;padding:1px 0 0;border-bottom:1px solid #ddd;}
.m-hd ul{padding: 0px;width: 100%}
.m-hd ul,.m-hd li{float:left;}
.m-hd li{ width: 50%;position:relative;margin:-1px 0 0 0px;list-style:none!important;border-bottom: 1px solid #ccc}
.m-hd li:first-child{margin-left:0;}
.m-hd li a{display:block;padding:0 15px;border:1px solid #ddd;border-bottom:0;border-radius:5px 5px 0 0;text-align:center;font-size:14px;background:#f8f8f8;background:-webkit-gradient(linear,0% 0%,0% 100%,from(#fdfdfd),to(#f8f8f8));background:-webkit-linear-gradient(#fdfdfd,#f8f8f8);background:-moz-linear-gradient(#fdfdfd,#f8f8f8);background:-ms-linear-gradient(#fdfdfd,#f8f8f8);background:linear-gradient(#fdfdfd,#f8f8f8);}
.m-hd li a:hover{background:#fff;}
.m-hd li.z-crt a{padding-bottom:1px;margin-bottom:-1px;background:#fff;}


/* 侧边栏 */

.book-summary ul.summary li a, .book-summary ul.summary li span {padding-top:4px!important;padding-bottom:4px!important }
.book .book-summary .exc-trigger{top:7px!important}